JPH07123613A - Superconducting magnetic device - Google Patents
Superconducting magnetic deviceInfo
- Publication number
- JPH07123613A JPH07123613A JP5264565A JP26456593A JPH07123613A JP H07123613 A JPH07123613 A JP H07123613A JP 5264565 A JP5264565 A JP 5264565A JP 26456593 A JP26456593 A JP 26456593A JP H07123613 A JPH07123613 A JP H07123613A
- Authority
- JP
- Japan
- Prior art keywords
- temperature superconductor
- bulk
- levitation magnet
- superconducting magnetic
- magnetic device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/55—Flywheel systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は超電導磁気装置に関し、
特に高温超電導体を用いた磁気軸受を備えたフライホイ
ール発電機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting magnetic device,
In particular, it relates to a flywheel generator equipped with a magnetic bearing using a high-temperature superconductor.
【０００２】[0002]
【従来の技術】エネルギー貯蔵の方式として、電気エネ
ルギーを慣性モーメントの大きな物体の回転エネルギー
に変換して電力の出し入れを行う方式をとるものがフラ
イホイール発電機である。従来のフライホイール発電機
は通常の突極形発電機にフライホイールを取付け、通常
の軸受を用いて運転する。2. Description of the Related Art A flywheel generator uses an energy storage system that converts electric energy into rotational energy of an object having a large moment of inertia and outputs and outputs electric power. In the conventional flywheel generator, a flywheel is attached to an ordinary salient pole type generator and is operated by using an ordinary bearing.
【０００３】近年、磁気軸受を用いたフライホイール発
電機が設計され機械損を小さくとることができる構造が
提案された。さらに、磁気軸受部に高温超電導体を用い
る発電機が提案されたが、高温超電導体を冷却するため
の冷媒は高温超電導体部に流入するのみの構造であっ
た。この構造の例として、特開平4−178127 号公報を挙
げることができる。In recent years, a flywheel generator using magnetic bearings has been designed, and a structure capable of reducing mechanical loss has been proposed. Further, a generator using a high-temperature superconductor for the magnetic bearing portion has been proposed, but the refrigerant for cooling the high-temperature superconductor has a structure that only flows into the high-temperature superconductor portion. As an example of this structure, there is JP-A-4-178127.
【０００４】[0004]
【発明が解決しようとする課題】フライホイール発電機
の回転エネルギーは回転子の重量に比例し、回転速度の
２乗に比例する。このため、磁気軸受は大きな浮上力を
もち、大きな回転速度に耐えうる方が大きな回転エネル
ギーを貯蔵できる。The rotational energy of the flywheel generator is proportional to the weight of the rotor and to the square of the rotational speed. Therefore, the magnetic bearing has a large levitation force and can store a large amount of rotational energy if it can withstand a large rotational speed.
【０００５】一方、高温超電導体の磁場排斥力、すなわ
ち磁気軸受の反発力は温度が上昇すると急激に減衰し、
温度が低い状態では大きくなる。このため、高温超電導
体は常に十分な冷却状態に保つ方が有利である。高温超
電導体の温度が、温度上昇に対し反発力が減衰する割合
の大きい領域に有るとき、回転子と共に浮上用マグネッ
トが回転することにより高温超電導付近で磁場の揺動が
生じ、高温超電導体表面に渦電流が流れたり、周囲構造
物に渦電流が流れ、冷媒が蒸発して、高温超電導体の温
度がわずかに上昇しても、回転子は浮上ギャップを保て
ず、落下してしまう。On the other hand, the magnetic field repulsive force of the high temperature superconductor, that is, the repulsive force of the magnetic bearing, is rapidly attenuated when the temperature rises,
It increases when the temperature is low. Therefore, it is advantageous to always keep the high temperature superconductor in a sufficiently cooled state. When the temperature of the high-temperature superconductor is in a region where the repulsive force attenuates with respect to the temperature rise, the levitation magnet rotates together with the rotor, causing the magnetic field to oscillate near the high-temperature superconducting surface. If the eddy current flows through the rotor, or the eddy current flows through the surrounding structure, and the refrigerant evaporates and the temperature of the high-temperature superconductor rises slightly, the rotor does not maintain the levitation gap and falls.
【０００６】また、冷媒が流入口近くの高温超電導体を
冷却し、蒸発して流出する場合、高温超電導体の冷却状
態に不均一を生じ、浮上力が場所により異なることによ
り、回転子は振動を生じることになる。Further, when the refrigerant cools the high-temperature superconductor near the inflow port and evaporates and flows out, the cooling state of the high-temperature superconductor becomes uneven, and the levitation force varies depending on the location, so that the rotor vibrates. Will occur.
【０００７】さらに、回転電機は機械的に安定に運転す
ることが必要である。本発明が対象とする磁気軸受を用
いた発電機は回転子を上下させる必要がある上、空間に
浮上した状態で回転するため、回転子を適切な位置に設
置しなければならない。Further, the rotating electric machine needs to be mechanically stable. The generator using the magnetic bearing, which is the object of the present invention, requires the rotor to be moved up and down and rotates in a state of being levitated in the space. Therefore, the rotor must be installed at an appropriate position.
【０００８】本発明の目的は、磁気浮上力が大きくな
り、フライホイール発電機が貯蔵する回転エネルギーを
大きく出来きると共に、回転子の振動が小さくなり、回
転が安定し且つ均一にすることができる高温超電導磁気
装置を提供することにある。The object of the present invention is to increase the magnetic levitation force, to increase the rotational energy stored in the flywheel generator, and to reduce the vibration of the rotor so that the rotation is stable and uniform. It is to provide a high temperature superconducting magnetic device.
【０００９】[0009]
【課題を解決するための手段】本発明の高温超電導磁気
装置例えばフライホイール発電機は、電力系統と接続し
ている固定子及びフライホイールと、フライホイールを
設置した浮上用マグネットに対向配置された高温超電導
体と、該高温超電導体に蒸気圧を１気圧以下にした冷媒
を供給して高温超電導体を過冷却にする手段を設けたこ
とにある。A high temperature superconducting magnetic device of the present invention, for example, a flywheel generator, is arranged to face a stator and a flywheel connected to a power system, and a levitation magnet on which the flywheel is installed. There is provided a high temperature superconductor and a means for supercooling the high temperature superconductor by supplying the high temperature superconductor with a refrigerant having a vapor pressure of 1 atm or less.
【００１０】[0010]
【作用】この結果、高温超電導体と浮上用マグネットと
の間の磁気浮上力が大きくなり、フライホイール発電機
が貯蔵する回転エネルギーを大きく出来きると共に、回
転子の振動が小さくなり、回転が安定し且つ均一にする
ことができる。As a result, the magnetic levitation force between the high-temperature superconductor and the levitation magnet is increased, the rotational energy stored in the flywheel generator can be increased, and the vibration of the rotor is reduced to stabilize the rotation. And uniform.
【００１１】[0011]
【実施例】図１及び図２に本発明のフライホイール発電
機の実施例を示す。1 and 2 show an embodiment of the flywheel generator of the present invention.
【００１２】１は高温超電導体で形状は塊状である。こ
の高温超電導体は第２種超電導体で、超電導状態では磁
力線を排除するような電流が流れ、磁場に対し反発力を
生ずる性質をもつ。一方、ピン止め点を内在し、強い磁
場の下では若干の磁力線がしみこみ、それを固定する性
質がある。１は以下バルクと記す。Reference numeral 1 is a high-temperature superconductor, which is massive. This high-temperature superconductor is a type 2 superconductor, and has a property of generating a repulsive force against a magnetic field by flowing a current that eliminates magnetic lines of force in a superconducting state. On the other hand, there is a property that the pinning point is inherent, and some magnetic field lines penetrate under a strong magnetic field and fix it. 1 is hereinafter referred to as bulk.
【００１３】２はバルク収納箱で、バルク１を収納して
いる密封容器であるが、冷媒流入口と蒸発した冷媒の排
出口をもつ。Reference numeral 2 denotes a bulk storage box, which is a sealed container that stores the bulk 1, but has a refrigerant inflow port and an evaporated refrigerant discharge port.
【００１４】３は冷媒用タンクでパイプによりバルク収
納箱２と接続されている。A refrigerant tank 3 is connected to the bulk storage box 2 by a pipe.
【００１５】４は冷媒で冷媒用タンク３からバルク収納
箱２に入り、バルク１を冷却する。バルク１は冷媒４に
より冷却され超電導状態になる。冷媒４としては例えば
液体窒素，液体ヘリウムなどが用いられる。Refrigerant 4 enters the bulk storage box 2 from the refrigerant tank 3 and cools the bulk 1. The bulk 1 is cooled by the refrigerant 4 and becomes in a superconducting state. Liquid nitrogen, liquid helium, or the like is used as the coolant 4.
【００１６】５は回転子でシャフト，フライホイール
７，磁極８，浮上用マグネット６から成り、バルク１の
反発力により空間に浮上し、回転する。A rotor 5 is composed of a shaft, a flywheel 7, magnetic poles 8 and a levitation magnet 6, which is levitated in space by the repulsive force of the bulk 1 and rotates.
【００１７】６は浮上用マグネットで、バルク１と対向
する位置にある。バルク１が超電導状態となった後はバ
ルク１との間で反発力を生じ、回転子５を浮上させる。A levitation magnet 6 is located at a position facing the bulk 1. After the bulk 1 is in the superconducting state, a repulsive force is generated between the bulk 1 and the bulk 1 to levitate the rotor 5.
【００１８】７はフライホイールで回転エネルギーの形
でエネルギーを貯える。図１の場合、ロータリムを兼ね
る。フライホイール７は図１のようにリング状とするこ
ともあるが、円盤状とすることもある。８は磁極でフラ
イホイール７に固定される。９は固定子コイルである。
１０は固定子鉄心である。１１は電源で、電動時は系統
１２から電力を受け適切な周波数に変換し、固定子コイ
ル９に電流を流す。発電時は発電機からの電力を系統１
２の周波数に変換し、系統１２へ電力を送る。１２は電
力系統で本発電機と電力のやりとりを行う。１３は真空
容器で、発電機を真空中に保つ。１４は真空排気装置
で、真空容器１３内の気体を排出する。１５はバックア
ップガイド軸受である。A flywheel 7 stores energy in the form of rotational energy. In the case of FIG. 1, it also serves as the rotor rim. The flywheel 7 may be ring-shaped as shown in FIG. 1 or may be disk-shaped. A magnetic pole 8 is fixed to the flywheel 7. 9 is a stator coil.
10 is a stator core. Reference numeral 11 is a power supply, which receives electric power from the system 12 when it is electrically operated, converts it to an appropriate frequency, and supplies a current to the stator coil 9. When generating power, the power from the generator is used for grid 1
The frequency is converted to 2 and the power is sent to the grid 12. A power system 12 exchanges electric power with the generator. Reference numeral 13 is a vacuum container for keeping the generator in vacuum. A vacuum exhaust device 14 exhausts the gas in the vacuum container 13. Reference numeral 15 is a backup guide bearing.
【００１９】本発電機はバルク１のピン止め力により、
回転軸に垂直な方向の振動を抑える性質を利用している
が、振動が大きくピン止めによる抑止力を超える場合に
備え、ガイド軸受１５をもつ。１６は駆動装置で、回転
子５を上下させる。１７は減圧装置で、冷媒用タンク３
を含む冷媒４の流路の圧力を下げる。This generator uses the pinning force of the bulk 1 to
It utilizes the property of suppressing vibration in the direction perpendicular to the rotation axis, but has a guide bearing 15 in case the vibration exceeds the deterrent force due to pinning. Reference numeral 16 is a drive device for moving the rotor 5 up and down. Reference numeral 17 is a decompression device, which is a refrigerant tank 3
The pressure of the flow path of the refrigerant 4 containing is reduced.
【００２０】本発電機は基本的には次の手順で運転す
る。The generator is basically operated by the following procedure.
【００２１】 真空容器１３中を真空排気し、回転子
５を駆動装置１６で持ち上げた状態とする。The inside of the vacuum container 13 is evacuated and the rotor 5 is lifted by the drive unit 16.
【００２２】 冷媒４をバルク収納箱２に流入させ、
バルク１を超電導状態にする。The refrigerant 4 is caused to flow into the bulk storage box 2,
The bulk 1 is brought into a superconducting state.
【００２３】 駆動装置１６を下げ、回転子５を下げ
る。ある時点で浮上用マグネット６とバルク１の間の反
発力と回転子５の重量がつりあい、回転子５が浮上す
る。The drive device 16 is lowered and the rotor 5 is lowered. At a certain point, the repulsive force between the levitation magnet 6 and the bulk 1 and the weight of the rotor 5 are balanced, and the rotor 5 floats.
【００２４】 電源１１より電力を供給し、回転子５
を回転させ、回転エネルギーの形でフライホイール７に
エネルギーを貯える。Power is supplied from the power supply 11 and the rotor 5
Is rotated and energy is stored in the flywheel 7 in the form of rotational energy.
【００２５】 系統の状態により回転数を変化させ、
エネルギーを系統１２との間でやりとりを行う。The rotation speed is changed according to the state of the system,
Exchange energy with the grid 12.
【００２６】本発明の発電機では、冷媒用タンク３に減
圧装置１７を設けた。減圧装置１７を用いて冷媒用タン
ク３を減圧することにより、液体の冷媒を蒸発させ、蒸
発熱を奪うことにより冷媒４の温度を下げ、バルク１を
過冷却状態とすることができる。バルク１は温度を低減
すると、ピン止めが向上すると共に浮上力（磁場の反発
力）が大きくなる性質がある。In the generator of the present invention, the refrigerant tank 3 is provided with the pressure reducing device 17. By depressurizing the refrigerant tank 3 using the depressurizing device 17, the liquid refrigerant is evaporated and the heat of evaporation is removed to lower the temperature of the refrigerant 4 and bring the bulk 1 into a supercooled state. When the temperature of the bulk 1 is reduced, pinning is improved and the levitation force (magnetic field repulsive force) is increased.
【００２７】浮上力を大きくとるとフライホイル７の重
量を大きくとれ、より大きなエネルギーを貯えることが
できる。また、不均一な磁場分布をもつ浮上用マグネッ
ト６の回転によりバルク１またはその周辺に渦電流が生
じた場合でも、温度の上昇は小さく抑えられる。不均一
磁場がある場合、回転子の回転速度が大きいほど渦電流
は大きくなるが、冷却状態が保たれれば十分な浮上力は
保たれ、渦電流の影響は小さくなる。このため、過冷却
状態にすることは、貯蔵エネルギー増大と振動抑制に対
し、効果がある。When the floating force is increased, the weight of the flywheel 7 can be increased, and a larger amount of energy can be stored. Further, even if an eddy current is generated in the bulk 1 or its periphery due to the rotation of the levitation magnet 6 having a non-uniform magnetic field distribution, the temperature rise can be suppressed to a small level. In the presence of a non-uniform magnetic field, the eddy current increases as the rotation speed of the rotor increases, but if the cooling state is maintained, sufficient levitation force is maintained and the effect of the eddy current is reduced. Therefore, the supercooled state is effective for increasing the stored energy and suppressing the vibration.
【００２８】また、減圧を行わない場合、バルク１の冷
却は冷媒４の流入によって行われるが、流入口に近い部
分と蒸発した冷媒の排出口近くでは冷却状態が異なり、
浮上力に不均一を生ずる。冷媒とその蒸発気体が存在す
る部分を減圧する場合、冷媒が一方向に吸い込まれるこ
との無いよう、冷媒の流入側と流出側を同時に減圧する
必要がある。すると冷媒はその流路全体にわたって、均
一な減圧状態となり、磁気軸受を構成する範囲に広がり
をもつバルク１を均一に冷却することができ、均一な浮
上力が得られる。これにより、回転子５の振動を抑制す
ることができる。When the pressure reduction is not performed, the bulk 1 is cooled by the inflow of the refrigerant 4, but the cooling state is different between the portion near the inlet and the outlet for the evaporated refrigerant.
The levitation force becomes uneven. When decompressing the refrigerant and the portion where the vaporized gas exists, it is necessary to decompress the inflow side and the outflow side of the refrigerant at the same time so that the refrigerant is not sucked in one direction. Then, the refrigerant is brought into a uniform depressurized state over the entire flow path thereof, and the bulk 1 having a spread in the range forming the magnetic bearing can be uniformly cooled, and a uniform levitation force can be obtained. Thereby, the vibration of the rotor 5 can be suppressed.
【００２９】本発明の別の実施例では、前記運転手順の
との間に減圧装置１７を運転し、冷媒４の流路を減
圧する過程が入る。つまり、バルク１を過冷却状態と
し、大きな反発力を出しうる状態としてから回転子を駆
動装置１６により運転開始の位置に設置する。これによ
り、重量が大きい回転子を確実に浮上させることができ
る。In another embodiment of the present invention, a step of operating the decompression device 17 and decompressing the flow path of the refrigerant 4 is performed during the operation procedure. That is, the bulk 1 is placed in a supercooled state and a large repulsive force can be generated, and then the rotor is installed at the operation start position by the drive device 16. As a result, a rotor having a large weight can be reliably levitated.
【００３０】本発明の別の実施例である図３には、重力
方向に駆動力が働く駆動装置１６と、駆動装置１６と回
転子５を結合、切離しを行う結合装置１８を備えた。こ
れは例えばバルクを浮上用マグネットの上下に配した場
合に有利である。この場合の実施例を図２に示す。浮上
用マグネット６に対しバルク１を上下に取り付けた場
合、運転手順では回転子は上部のバルクに近く、下部
のバルクからは遠い位置にある。従って、上部のバルク
には浮上用マグネット６の磁場がしみこんでおり、下部
のバルクにはしみこんでいない。FIG. 3, which is another embodiment of the present invention, is provided with a driving device 16 for exerting a driving force in the direction of gravity and a coupling device 18 for coupling and disconnecting the driving device 16 and the rotor 5. This is advantageous, for example, when the bulk is arranged above and below the levitation magnet. An example of this case is shown in FIG. When the bulk 1 is mounted above and below the levitation magnet 6, the rotor is located near the upper bulk and far from the lower bulk in the operating procedure. Therefore, the magnetic field of the levitation magnet 6 is impregnated in the upper bulk, and is not impregnated in the lower bulk.
【００３１】運転手順では磁場はこの状態で固定され
るため、運転手順では、回転子５は上部バルクからは
引張力を、下部バルクからは反発力を受ける。このた
め、回転子５は上部バルクに接触したままとなるか非常
に近い位置に保たれ、回転不可能または高速回転する回
転子の位置としては安全上不適当な位置となる。本発明
の駆動装置１６と結合装置１８を用いれば上部バルク，
下部バルクから受ける力に抗して回転子５を適切な運転
位置に設置した後、浮上状態とすることができるうえ、
回転子５は上部バルク，下部バルクからの力を受けるた
め、重量を大きく取ることができ、貯蔵エネルギー増大
に効果がある。Since the magnetic field is fixed in this state in the operating procedure, the rotor 5 receives a tensile force from the upper bulk and a repulsive force from the lower bulk in the operating procedure. For this reason, the rotor 5 remains in contact with the upper bulk or is kept at a very close position, which is a position unsafe or unsuitable for the position of the rotor rotating at high speed. With the drive device 16 and the coupling device 18 of the present invention, the upper bulk,
After placing the rotor 5 in an appropriate operating position against the force received from the lower bulk, it can be floated and
Since the rotor 5 receives the force from the upper bulk and the lower bulk, it can take a large weight and is effective in increasing the stored energy.
【００３２】さらに、振動に対しては運転状態の状態
で上部バルクにしみこんだ磁束と、駆動装置１６の力で
下部バルク側に回転子５を押しつけることによりしみこ
んだ磁束により、より大きな振動抑制効果が発揮でき
る。振動抑制についてはバルク１が下部にのみ存在する
場合でも同様の理由で効果がある。Further, with respect to vibration, the magnetic flux that has penetrated into the upper bulk in the operating state and the magnetic flux that has penetrated by pressing the rotor 5 to the lower bulk side by the force of the drive unit 16 have a greater vibration suppressing effect. Can be demonstrated. The vibration suppression is effective for the same reason even when the bulk 1 exists only in the lower part.
【００３３】また、駆動装置１６を真空容器１３の外部
下側に取付け、その駆動力をベローズなどの伸縮機構を
介して回転子５に伝達する場合、その駆動力は伸縮機構
に加わる真空容器内外の気圧差と伸縮機構断面積との積
で表される力と回転子５の重量の差に相当する力で重力
方向に働かさねばならない。この駆動力が不足した場
合、気圧差による力により回転子５は持ち上げられたま
まの状態となり、運転不可能となる。発電機が大型化し
た場合、駆動機構も回転子の重量に対応して大きくせね
ばならない。すると断面積も大きくなり、気圧差による
力も大きくなる。従って、重力方向に駆動力が働く駆動
装置１６は重要である。When the driving device 16 is attached to the outside of the vacuum container 13 and its driving force is transmitted to the rotor 5 through an expansion / contraction mechanism such as a bellows, the driving force is applied to the expansion / contraction mechanism inside and outside the vacuum container. The force represented by the product of the atmospheric pressure difference and the cross-sectional area of the expansion mechanism and the force corresponding to the difference in weight of the rotor 5 must act in the direction of gravity. When this driving force is insufficient, the rotor 5 remains lifted by the force due to the pressure difference, and the rotor 5 cannot be operated. When the generator becomes larger, the drive mechanism also has to be made larger in accordance with the weight of the rotor. Then, the cross-sectional area also increases and the force due to the pressure difference also increases. Therefore, the driving device 16 in which the driving force acts in the direction of gravity is important.
【００３４】図４，図５に本発明高温超電導体収納容器
２の実施例を示す。図４は図５のＡ−Ａ断面を示す。図
５には密封容器の例を示すが、密封されない場合もあ
る。4 and 5 show an embodiment of the high temperature superconductor storage container 2 of the present invention. FIG. 4 shows an AA cross section of FIG. FIG. 5 shows an example of a sealed container, but it may not be sealed.
【００３５】２０はバルク１を囲み、固定する部材で、
以後リブと記す。Reference numeral 20 is a member for enclosing and fixing the bulk 1.
Hereinafter referred to as ribs.
【００３６】２１はバルク１と浮上用マグネットの間に
ある部材で、以後上板と記す。Reference numeral 21 denotes a member between the bulk 1 and the levitation magnet, which will be referred to as an upper plate hereinafter.
【００３７】２２はベースで、バルク１を支える基礎と
なる。Reference numeral 22 denotes a base, which is a base for supporting the bulk 1.
【００３８】２３は第１支持材で、ベース２２の上に乗
り、バルク１を押し上げる役目を持つ。Reference numeral 23 is a first support member, which has a role of riding on the base 22 and pushing up the bulk 1.
【００３９】２４は第２支持材で、始めバネ定数が小さ
く、バルク１を所定の位置に設置した後バネ定数が大き
くなる。Reference numeral 24 denotes a second support member, which has a small spring constant at the beginning and a large spring constant after the bulk 1 is installed at a predetermined position.
【００４０】２５は冷媒４の流路である。Reference numeral 25 is a flow path for the refrigerant 4.
【００４１】２６は第３支持材で、低温でも弾性を持
つ。Reference numeral 26 is a third support material, which has elasticity even at low temperatures.
【００４２】本発明のバルク収納箱２では複数のバルク
１を分離して収納した。前記したように、大きい浮上力
を得るためにバルク１を十分に冷却することが必要であ
る。このため、バルク１は冷媒４に接する面積を大きく
取る方がよい。従ってバルク１を平面的に配置した場
合、バルク１の冷却状態を保つためにはバルク１の間に
冷媒４の流路２５を設け、冷媒４に接する面積を大きく
取るとともに、バルク１を冷却して、温度が上がった冷
媒４が排出されやすくする方が有利である。In the bulk storage box 2 of the present invention, a plurality of bulks 1 are stored separately. As mentioned above, it is necessary to cool the bulk 1 sufficiently to obtain a large levitation force. For this reason, it is preferable that the bulk 1 has a large area in contact with the refrigerant 4. Therefore, when the bulk 1 is arranged in a plane, in order to maintain the cooling state of the bulk 1, a flow path 25 for the coolant 4 is provided between the bulks 1, a large area in contact with the coolant 4 is taken, and the bulk 1 is cooled. Therefore, it is more advantageous to make it easier to discharge the refrigerant 4 whose temperature has risen.
【００４３】一方、浮上力は浮上用マグネット６に対向
するバルク１の面積が大きいほど大きくなるため、多数
のバルク１を敷き詰める方が有利である。浮上させる物
体の重量が浮上力に比べて小さく、浮上ギャップが十分
とれ、バルク１を十分冷媒４に浸すことができればバル
ク１を敷きつめても十分に冷却できる。しかし、磁気軸
受の性能を有効に用い、大重量の物体を支えるためには
必要となる浮上性能を発揮しうる対向面積をもつようバ
ルクをまとめて並べ、群とし、群の間に適切な冷媒４の
流路２５を設けることが必要である。On the other hand, since the levitation force increases as the area of the bulk 1 facing the levitation magnet 6 increases, it is advantageous to spread a large number of bulks 1. If the weight of the object to be levitated is smaller than the levitation force, the levitating gap is sufficient, and the bulk 1 can be sufficiently immersed in the refrigerant 4, the bulk 1 can be sufficiently cooled even if it is spread. However, bulks are grouped together so that they have opposing areas that can exhibit the levitation performance required to support heavy objects by effectively using the performance of magnetic bearings. It is necessary to provide four channels 25.
【００４４】図１に示すように真空中でバルク収納箱２
を用いる場合、バルク収納箱２は、内部と外部の気圧差
によって受ける力による変形を小さく抑えねばならな
い。バルク収納箱２を図５に示すような密閉容器とする
と、バルク１と浮上用マグネット６の間を仕切る上板２
１は、浮上力を有効に利用するため、変形を小さくでき
る範囲で薄くする方がよい。上板２１にリブ２０を接合
すると、変形を抑えると同時に上板２１を薄くできる。
バルク１を分離して収納すればこのリブ２０を設ける構
造とすることができ、浮上力を有効に利用できる。As shown in FIG. 1, a bulk storage box 2 in vacuum
In the case of using, the bulk storage box 2 must be suppressed from being deformed by a force applied by a pressure difference between the inside and the outside. If the bulk storage box 2 is a closed container as shown in FIG. 5, the upper plate 2 that partitions the bulk 1 and the levitation magnet 6 from each other.
In No. 1, since the levitation force is effectively used, it is better to make it thinner within a range where deformation can be reduced. By joining the ribs 20 to the upper plate 21, the deformation of the upper plate 21 can be suppressed and the thickness of the upper plate 21 can be reduced.
If the bulk 1 is stored separately, the rib 20 can be provided and the levitation force can be effectively used.
【００４５】本発明の別の実施例では、バルク１を固定
する部材のバルク１の最上部と同じ高さに冷媒４の流路
２５を設けた。この構造を図６に示す。バルク１を固定
する部材は図５に示すようなリブ構造や、支柱などがあ
り、バルク収納箱２が必要とする強度により構造を選択
する。冷媒４の流路２５はリブ２０を切り欠くことや、
支柱に間隔をあけることで確保される。冷媒４はバルク
１の温度を下げるとバルク１から熱を奪い、温度が上昇
し、バルク収納箱２の上部に集まる。すると浮上力を発
揮すべきバルク１の上部の温度が下がらず、浮上力が得
られなくなる。従って温度が上昇した冷媒４をバルク収
納箱２の外部に排出する流路２５が必要である。図１に
示すようなスラスト軸受の場合、構造的に軸受面が水平
である方が簡便である。この構造で強度を上げるため内
部にリブ２０を設置した場合、リブ２０に必要な厚さが
バルク１の厚さよりも大きいと温度の上がった冷媒４が
バルク１に接したままとなり、さらに水平構造のため外
部へ排出されず、バルク１が十分冷却されない。従って
本発明の構造とし、効率よくバルク１を冷却することは
大きな浮上力を得るために有効である。In another embodiment of the present invention, the flow path 25 for the coolant 4 is provided at the same height as the uppermost part of the bulk 1 of the member for fixing the bulk 1. This structure is shown in FIG. The member for fixing the bulk 1 has a rib structure as shown in FIG. 5 or a pillar, and the structure is selected according to the strength required by the bulk storage box 2. The flow path 25 of the refrigerant 4 has the rib 20 cut out,
Secured by spacing the columns. When the temperature of the bulk 1 is lowered, the refrigerant 4 takes heat from the bulk 1, the temperature rises, and collects on the upper part of the bulk storage box 2. Then, the temperature of the upper portion of the bulk 1 which should exert the levitation force does not decrease, and the levitation force cannot be obtained. Therefore, the flow path 25 for discharging the coolant 4 having an increased temperature to the outside of the bulk storage box 2 is required. In the case of the thrust bearing as shown in FIG. 1, it is easier for the bearing surface to be horizontal in terms of structure. In this structure, when the ribs 20 are installed inside to increase the strength, if the thickness required for the ribs 20 is larger than the thickness of the bulk 1, the coolant 4 whose temperature has risen remains in contact with the bulk 1 and the horizontal structure is further increased. Therefore, it is not discharged to the outside and the bulk 1 is not sufficiently cooled. Therefore, the structure of the present invention and efficient cooling of the bulk 1 are effective for obtaining a large levitation force.
【００４６】本発明の別の実施例では、バルク１を所定
の位置に設置する際にはバネ定数が小さく、設置後にバ
ネ定数が大きくなる部材（第２支持材）２４を用いバル
ク１を支えた。前記したように、上板２１は浮上力を有
効に利用するため、薄板構造とする方が有効であり、バ
ルク１も上板２１に接するように設置するのがよい。バ
ルク１は、ベース２２に第１支持材２３を立て、その上
に設置する。これは、冷媒４の流路２５を確保するため
である。しかし、バルク１，第１支持材２３ともに製造
上の寸法公差を有し、上板２１にバルク１の角部が強く
押しつけられた場合、上板２１は大きく変形し、十分な
浮上ギャップがとれなくなり、浮上用マグネット６がバ
ルク収納箱２に接触する可能性が生じる。この状態を図
７に示す。本発明では第１支持材２３とバルク１の間に
第２支持材２４を設けた。これを図８に示す。バルク収
納箱２の製造時、第１支持材２３とバルク１の間にバネ
定数の小さい第２支持材２４を挿入し、ベース２２で押
し上げ、各部の寸法公差を吸収し、バルク１を上板２１
に接するように設置する。この後第２支持材２４のバネ
定数が大きくなり、バルク１に浮上物体の重量が加わっ
ても位置を変えることなく浮上物体の重量を支え、浮上
ギャップを保つことができる。In another embodiment of the present invention, the bulk 1 is supported by using a member (second support member) 24 having a small spring constant when the bulk 1 is installed at a predetermined position and a large spring constant after the installation. It was As described above, since the upper plate 21 effectively utilizes the levitation force, it is more effective to have a thin plate structure, and it is preferable to install the bulk 1 so as to be in contact with the upper plate 21. In the bulk 1, the first support member 23 is set up on the base 22 and installed on the first support member 23. This is to secure the flow path 25 of the refrigerant 4. However, both the bulk 1 and the first support member 23 have manufacturing dimensional tolerances, and when the corners of the bulk 1 are strongly pressed against the upper plate 21, the upper plate 21 is largely deformed and a sufficient floating gap is taken. There is a possibility that the floating magnet 6 will come into contact with the bulk storage box 2. This state is shown in FIG. In the present invention, the second support material 24 is provided between the first support material 23 and the bulk 1. This is shown in FIG. At the time of manufacturing the bulk storage box 2, the second support material 24 having a small spring constant is inserted between the first support material 23 and the bulk 1 and pushed up by the base 22 to absorb the dimensional tolerance of each part, and the bulk 1 is placed on the upper plate. 21
Install it so that it touches. After that, the spring constant of the second support member 24 increases, and even if the weight of the floating object is added to the bulk 1, the weight of the floating object can be supported without changing the position and the floating gap can be maintained.
【００４７】本発明の別の実施例では低温中で弾性を有
する部材（第３支持材）２６を用いてバルク１を支持し
た。この例を図９に示す。前記したように、磁気軸受に
十分な浮上ギャップを持たせるため、バルク１は常に上
板２１に接した状態に保つのがよい。バルク収納箱２を
製作する際、バルク１を上板２１に接するように設置し
ても、冷却状態では各部に収縮が起こり、バルク収納箱
２の収縮と、バルク１と支持材の収縮の和が異なれば上
板２１とバルク１との間にギャップを生じるか、バルク
１が上板２１を押し上げ、バルク収納箱２に変形を生じ
る。このため、バルク１の支持材としてバネを用いて常
に上板２１に接するようにしたい。しかし一般に金属は
低温で脆化し、弾性を失う。このため、通常の金属バネ
とは異なる低温中で弾性を有する第３支持材２６を用い
てバルク１を支持した。第３支持材２６は、例えばセラ
ミックス製である。In another embodiment of the present invention, the bulk 1 is supported by using a member (third support material) 26 having elasticity at low temperature. An example of this is shown in FIG. As described above, it is preferable to keep the bulk 1 in contact with the upper plate 21 at all times so that the magnetic bearing has a sufficient floating gap. When the bulk storage box 2 is manufactured, even if the bulk storage box 2 is installed so as to contact the upper plate 21, contraction occurs in each part in the cooled state, and the sum of the contraction of the bulk storage box 2 and the contraction of the bulk 1 and the support material. If the difference is different, a gap is generated between the upper plate 21 and the bulk 1, or the bulk 1 pushes up the upper plate 21 and the bulk storage box 2 is deformed. For this reason, it is desirable to use a spring as a support material for the bulk 1 so as to always contact the upper plate 21. However, metals generally become brittle at low temperatures and lose elasticity. Therefore, the bulk 1 is supported by using the third support member 26 having elasticity at a low temperature different from that of a normal metal spring. The third support member 26 is made of, for example, ceramics.
【００４８】本発明の別の実施例では扇形のバルク１を
円周上に配置した。浮上用マグネット６が不均一な磁場
分布をもつ場合や、バルク１が円周上で不連続に配置さ
れている場合、浮上用マグネット６を含む回転子５の回
転によりバルク１またはその周辺に渦電流が生じ、温度
が上昇し、浮上ギャップを保てなくなる。渦電流は回転
子５の回転速度が大きいほど大きくなる。このため、互
いに対向するバルク１と浮上用マグネット６は同心円状
である方がよい。一方、前記したように、バルク１の配
置としてはバルク１の群ごとに間隔をおく方が、バルク
１の冷却されやすさとバルク収納箱２の強度の点から有
利である。従って、バルク１の形状は扇形とし、円周上
に配置すると十分な冷却状態が保たれ、渦電流による熱
発生も小さく、バルク収納箱２の強度も大きくとること
ができ、十分な浮上ギャップをとれ、有利である。In another embodiment of the invention, the fan-shaped bulks 1 are arranged on the circumference. When the levitation magnet 6 has an inhomogeneous magnetic field distribution, or when the bulk 1 is discontinuously arranged on the circumference, the rotor 5 including the levitation magnet 6 rotates to swirl the bulk 1 or its periphery. An electric current is generated, the temperature rises, and the floating gap cannot be maintained. The eddy current increases as the rotation speed of the rotor 5 increases. For this reason, it is preferable that the bulk 1 and the levitation magnet 6 facing each other be concentric. On the other hand, as described above, it is more advantageous to arrange the bulks 1 in groups of the bulks 1 in terms of the ease of cooling the bulks 1 and the strength of the bulk storage box 2. Therefore, if the bulk 1 is fan-shaped and arranged on the circumference, a sufficient cooling state is maintained, heat generation due to eddy current is small, and the bulk storage box 2 can have a large strength and a sufficient floating gap can be obtained. It is advantageous.
【００４９】本発明の別の実施例では、リブ２０を溶接
以外の方法で製作し、上板２１をリブ２０に局部的溶接
にて固定した。バルク収納箱２は回転子５との間の浮上
ギャップを十分に取るため、上板２１の平面度を精度良
く製作する必要がある。上板２１が接合されるリブ２０
は柱を組み合わせ、接合した形であるが、溶接にて製作
した場合、熱による変形が大きく、寸法精度を高くとる
ことができない。また、低温で回転子５の重量とバルク
収納箱２の内外の気圧差による力を支えねばならず、リ
ブ２０は十分な強度を持たねばならない。このため、本
発明ではリブ２０を溶接以外の方法、例えば厚板からワ
イヤカットにてリブ２０をくりぬく方法で製作した。上
板２１は磁気軸受の浮上ギャップを大きくとるため薄板
を用いる。上板２１はバルク収納箱２の内外の気圧差に
よる力による変形を小さく抑え、さらに真空シールの構
造とせねばならない。外周部のみの接合とすると、気圧
差により大きく変形し、必要な浮上ギャップをとること
ができなくなる。また、ボルトなどによる固定では真空
シールを行うことができない。このため、本発明では上
板２１は多数箇所の局部的溶接にてリブ２０に接合し変
形を最小限に抑えると共に、真空シールを行った。この
方法により、変形が少ないバルク収納箱２を製作するこ
とができ、十分な浮上ギャップをもつ磁気軸受を構成す
ることができた。In another embodiment of the present invention, the rib 20 is manufactured by a method other than welding, and the upper plate 21 is fixed to the rib 20 by local welding. Since the bulk storage box 2 has a sufficient floating gap between the bulk storage box 2 and the rotor 5, the flatness of the upper plate 21 needs to be accurately manufactured. Rib 20 to which upper plate 21 is joined
Is a shape in which columns are combined and joined, but when manufactured by welding, deformation due to heat is large and dimensional accuracy cannot be high. Further, at low temperature, the weight of the rotor 5 and the force due to the pressure difference between the inside and the outside of the bulk storage box 2 must be supported, and the rib 20 must have sufficient strength. Therefore, in the present invention, the rib 20 is manufactured by a method other than welding, for example, a method of hollowing the rib 20 by wire cutting from a thick plate. As the upper plate 21, a thin plate is used in order to increase the floating gap of the magnetic bearing. The upper plate 21 is required to suppress deformation due to a force due to a pressure difference between the inside and outside of the bulk storage box 2 and to have a vacuum seal structure. If only the outer peripheral portion is joined, it will be largely deformed due to the difference in atmospheric pressure, and it will not be possible to obtain a necessary floating gap. Also, vacuum sealing cannot be performed by fixing with bolts or the like. Therefore, in the present invention, the upper plate 21 is joined to the rib 20 by local welding at a large number of places to minimize the deformation, and vacuum sealing is performed. By this method, the bulk storage box 2 with less deformation can be manufactured, and the magnetic bearing having a sufficient floating gap can be constructed.
【００５０】更に、本発明の別の実施例では、浮上物体
の位置を監視し、規定の範囲を越えた場合、超電導磁気
装置の運転を停止した。本発明の超電導磁気装置を磁気
軸受として用いる場合、浮上させる物体は回転運動をす
る。この場合、回転運動する物体は周囲と非接触の状態
で運動するため、機械的損失を低くできる特徴がある。Further, in another embodiment of the present invention, the position of the levitating object is monitored, and when the position exceeds the specified range, the operation of the superconducting magnetic device is stopped. When the superconducting magnetic device of the present invention is used as a magnetic bearing, the levitated object makes a rotational motion. In this case, the rotating object moves without contact with the surroundings, so that the mechanical loss can be reduced.
【００５１】一方、前記したようにバルク１を十分な冷
却状態に保てない場合、浮上ギャップが小さくなり、バ
ルク１のもつピン止め力が低下し、振動が大きくなる。
この状態で運転を続行すると、回転する物体は周囲の構
造物に接触し、装置を破損する恐れが有る。このため、
周囲構造の位置に対応して安全範囲を定め、浮上物体の
位置を監視し、前記範囲を越えた場合、超電導磁気装置
の運転を停止することは安全に装置を運転する上で有用
である。On the other hand, as described above, when the bulk 1 cannot be kept in a sufficiently cooled state, the floating gap becomes small, the pinning force of the bulk 1 is reduced, and vibration is increased.
If the operation is continued in this state, the rotating object may come into contact with surrounding structures and damage the device. For this reason,
It is useful to safely operate the device by defining a safe range corresponding to the position of the surrounding structure, monitoring the position of the levitating object, and stopping the operation of the superconducting magnetic device when exceeding the range.
【００５２】本発明の別の実施例で電力系統１２と接続
している固定子コイル９と、浮上マグネット６に対向配
置されたバルク１を含む超電導磁気装置を０.７atmから
１０torrまたは０.１torr 以下の雰囲気中で使用した。
バルク１を用いた磁気軸受を減圧して雰囲気中で用いる
ことは、低温に保ち必要があるバルク１に対して、周囲
と断熱状態とする上で有効である。また浮上状態で回転
する回転子５により生じる風損を低下する上で有効であ
る。In another embodiment of the present invention, a superconducting magnetic device including a stator coil 9 connected to an electric power system 12 and a bulk 1 opposed to a levitation magnet 6 is installed at 0.7 atm to 10 torr or 0.1 torr. It was used in the following atmosphere.
It is effective to reduce the pressure of the magnetic bearing using the bulk 1 and use it in the atmosphere for keeping the bulk 1 in a heat insulating state with respect to the bulk 1 which needs to be kept at a low temperature. It is also effective in reducing windage loss caused by the rotor 5 that rotates in a floating state.
【００５３】一方、減圧した気体中に電圧がかかった電
極があるとき、電極の距離と気圧の圧力と電圧がある条
件を満たすとき、電極間で火花が生じる。この条件は、
電極周囲に存在する気体の種類によっても異なる。火花
を生じるときの電極間の電圧を火花電極と言い、気体の
圧力と電極の距離の積の関数である。これをパッシェン
の法則という。火花電圧が最小になる電圧を最小火花電
圧と呼び、空気の場合は、気圧と電極の距離の積が５.
６７mmＨｇ のとき、３３０Ｖである。固定しコイル９
にはその運転状態に応じた電圧がかかっているが、パッ
シェンの法則により定められている条件を満たすと、装
置は絶縁破壊を起し、電気的に装置が破壊される。これ
を避けるために、超電導磁気装置を０.７atmから１０to
rrまたは０.１torr 以下の雰囲気中で使用することは有
効である。On the other hand, when there is an electrode to which a voltage is applied in the depressurized gas, a spark is generated between the electrodes when the distance between the electrodes and the pressure and voltage of the atmospheric pressure satisfy certain conditions. This condition is
It also depends on the type of gas present around the electrode. The voltage between the electrodes when a spark is generated is called the spark electrode and is a function of the product of gas pressure and electrode distance. This is called Paschen's law. The minimum spark voltage is called the minimum spark voltage. In the case of air, the product of atmospheric pressure and electrode distance is 5.
It is 330 V at 67 mmHg. Fixed coil 9
Is applied with a voltage according to its operating state, but when the condition defined by Paschen's law is satisfied, the device causes dielectric breakdown, and the device is electrically destroyed. In order to avoid this, the superconducting magnetic device is changed from 0.7 atm to 10 to
It is effective to use in an atmosphere of rr or less than 0.1 torr.
【００５４】[0054]
【発明の効果】以上のように、本発明によれば、磁気軸
受の浮上力を大きく、安定且つ均一に取ることができ、
フライホイール発電機が貯蔵する回転エネルギーを大き
く取り、回転子の振動を小さく抑えることができる。As described above, according to the present invention, the levitation force of the magnetic bearing can be made large, stable and uniform,
A large amount of rotational energy is stored in the flywheel generator, and vibration of the rotor can be suppressed to a small level.
【図１】本発明のフライホイール発電機の側断面図であ
る。FIG. 1 is a side sectional view of a flywheel generator of the present invention.
【図２】図２は図１のフライホイール発電機の要部側断
面図である。FIG. 2 is a side sectional view of a main part of the flywheel generator shown in FIG.
【図３】本発明の他の実施例であるフライホイール発電
機の要部側断面図である。FIG. 3 is a side sectional view of a main part of a flywheel generator that is another embodiment of the present invention.
【図４】図４は図１のフライホイール発電機のバルク収
納箱の平面図である。FIG. 4 is a plan view of a bulk storage box of the flywheel generator of FIG. 1.
【図５】図４のフライホイール発電機のバルク収納箱の
側断面図である。5 is a side sectional view of the bulk storage box of the flywheel generator of FIG.
【図６】図４のバルク収納箱内に配置されたバルクの斜
視図である。6 is a perspective view of the bulk placed in the bulk storage box of FIG. 4. FIG.
【図７】先行技術として示したバルク収納箱の側断面図
である。FIG. 7 is a side sectional view of the bulk storage box shown as the prior art.
【図８】図４のバルク収納箱の側断面図である。8 is a side sectional view of the bulk storage box of FIG.
【図９】本発明のバルク収納箱の側断面図である。FIG. 9 is a side sectional view of the bulk storage box of the present invention.
１…高温超電導体（バルク）、２…バルク収納箱、３…
冷媒用タンク、４…冷媒、５…回転子、６…浮上用マグ
ネット、７…フライホイール、８…磁極、９…固定子コ
イル、１０…固定子鉄心、１１…電源、１２…電力系
統、１３…真空容器、１４…真空排気装置、１５…バッ
クアップガイド軸受、１６…駆動装置、１７…減圧装
置、１８…結合装置、２０…リブ、２１…上板、２２…
ベース、２３…第１支持材、２４…第２支持材、２５…
流路、２６…第３支持材。1 ... High temperature superconductor (bulk), 2 ... Bulk storage box, 3 ...
Refrigerant tank, 4 ... Refrigerant, 5 ... Rotor, 6 ... Levitating magnet, 7 ... Flywheel, 8 ... Magnetic pole, 9 ... Stator coil, 10 ... Stator core, 11 ... Power supply, 12 ... Power system, 13 ... vacuum container, 14 ... vacuum exhaust device, 15 ... backup guide bearing, 16 ... drive device, 17 ... decompression device, 18 ... coupling device, 20 ... rib, 21 ... upper plate, 22 ...
Base, 23 ... First support material, 24 ... Second support material, 25 ...
Channel, 26 ... Third support material.
フロントページの続き (71)出願人 000180368 四国電力株式会社 香川県高松市丸の内２番５号 (72)発明者 田中 昭二 東京都江東区東雲一丁目14番３ 財団法人 国際超電導産業技術研究センター 超電 導工学研究所内 (72)発明者 森本 博 茨城県日立市幸町三丁目１番１号 株式会 社日立製作所日立工場内 (72)発明者 八坂 保弘 茨城県日立市幸町三丁目１番１号 株式会 社日立製作所日立工場内 (72)発明者 鈴木 宏和 東京都千代田区内幸町一丁目１番３号 東 京電力株式会社内 (72)発明者 遠藤 雅彦 東京都千代田区内幸町一丁目１番３号 東 京電力株式会社内 (72)発明者 鈴木 建哉 東京都千代田区内幸町一丁目１番３号 東 京電力株式会社内 (72)発明者 村上 雅人 東京都江東区東雲一丁目14番３ 財団法人 国際超電導産業技術研究センター 超電 導工学研究所内 (72)発明者 高市 浩 東京都江東区東雲一丁目14番３ 財団法人 国際超電導産業技術研究センター 超電 導工学研究所内Front page continuation (71) Applicant 000180368 Shikoku Electric Power Co., Inc. 2-5 Marunouchi, Takamatsu City, Kagawa Prefecture (72) Inventor Shoji Tanaka 1-14-3 Shinonome, Koto-ku, Tokyo International Superconducting Technology Center Induction Engineering Laboratory (72) Inventor Hiroshi Morimoto 3-1-1, Saiwaicho, Hitachi City, Ibaraki Hitachi Ltd. Hitachi Factory (72) Inventor Yasuhiro Yasaka 3-1-1, Saiwaicho, Hitachi City, Ibaraki Hitachi, Ltd. Hitachi Works (72) Inventor Hirokazu Suzuki 1-3-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Company (72) Inventor Masahiko Endo 1-3-1, Uchisaiwaicho, Chiyoda-ku, Tokyo In Tokyo Electric Power Company (72) Inventor Kenya Suzuki 1-3-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Company (72) Inventor Masato Murakami 1-14-3 Shinonome, Koto-ku, Tokyo Foundation International Superconductivity Industrial Technology Research Center Superconductivity Engineering Laboratory (72 ) Inventor Hiroshi Takaichi 1-14-3 Shinonome, Koto-ku, Tokyo International Superconductivity Industrial Technology Research Center Superconductivity Engineering Laboratory
Claims (13)
ホイールを設置した浮上用マグネットに対向配置された
高温超電導体と、該高温超電導体に蒸気圧を１気圧以下
にした冷媒を供給して高温超電導体を冷却する手段を設
けたことを特徴とする超電導磁気装置。1. A stator connected to an electric power system, a high-temperature superconductor opposite to a levitation magnet on which a flywheel is installed, and a refrigerant having a vapor pressure of 1 atm or less supplied to the high-temperature superconductor. And a means for cooling the high-temperature superconductor, the superconducting magnetic device.
を備えたことを特徴とする請求項１記載の超電導磁気装
置。2. The superconducting magnetic device according to claim 1, wherein a depressurizing device is provided in the coolant passage as the cooling means.
後に回転子を運転開始の位置に設置することを特徴とす
る請求項１記載の超電導磁気装置。3. The superconducting magnetic device according to claim 1, wherein the rotor is installed at a position where the operation is started after the pressure reducing device decompresses the flow path of the refrigerant.
電導体と、該高温超電導体を冷却する手段と、浮上用マ
グネットを駆動する駆動装置とを備え、駆動装置にて該
高温超電導体が浮上用マグネットの磁力の影響が小さく
なる距離まで離し、該高温超電導体を冷却し、超電導状
態となった後、浮上用マグネットを高温超電導体に接近
させて運転することを特徴とする超電導磁気装置。4. A high-temperature superconductor disposed opposite to a levitation magnet, means for cooling the high-temperature superconductor, and a drive device for driving the levitation magnet, wherein the high-temperature superconductor is levitated by the drive device. A superconducting magnetic device, characterized in that the levitation magnet is operated close to the high-temperature superconductor after the high-temperature superconductor is cooled to a superconducting state by being separated to a distance where the influence of the magnetic force of the application magnet is reduced.
用マグネットと、浮上用マグネットを重力方向に駆動さ
せる駆動装置とを備えたことを特徴とする超電導磁気装
置。5. A superconducting magnetic device comprising: a high-temperature superconductor, a levitation magnet arranged opposite to the high-temperature superconductor, and a drive device for driving the levitation magnet in the direction of gravity.
生じる反発力により物体を浮上させ、複数の高温超電導
体を分離して収納する収納容器を設けたことを特徴とす
る超電導磁気装置。6. A superconducting magnetic device comprising a storage container for suspending a plurality of high temperature superconductors by suspending an object by a repulsive force generated between a levitation magnet and a high temperature superconductor.
の間に生じる反発力により物体を浮上させ、複数の高温
超電導体間に各高温超電導体を固定する固定部材と、各
固定部材間に冷媒流路を設けた収納容器を使用したこと
を特徴とする超電導磁気装置。7. A fixing member for levitating an object by a repulsive force generated between a levitation magnet and a plurality of high-temperature superconductors to fix each high-temperature superconductor between the plurality of high-temperature superconductors, and between the fixing members. A superconducting magnetic device characterized by using a storage container provided with a coolant flow path.
じる反発力により物体を浮上させ、高温超電導体を所定
の位置に設置する際にはバネ定数が小さく、所定の位置
に設置した後バネ定数が大きくなる部材を用いることを
特徴とする超電導磁気装置。8. A spring constant is small when an object is levitated by a repulsive force generated between a high-temperature superconductor and a levitation magnet, and a high-temperature superconductor is installed at a predetermined position, and a rear spring is installed at the predetermined position. A superconducting magnetic device using a member having a large constant.
じる反発力により物体を浮上させ、高温超電導体とベー
スとの間に低温中で弾性を有する部材を配置することを
特徴とする超電導磁気装置。9. A superconducting magnet, characterized in that an object is levitated by a repulsive force generated between a high temperature superconductor and a levitation magnet, and a member having elasticity at a low temperature is arranged between the high temperature superconductor and the base. apparatus.
に生じる反発力により物体を浮上させ、扇形の高温超電
導体を円周上に配置することを特徴とする超電導磁気装
置。10. A superconducting magnetic device in which an object is levitated by a repulsive force generated between a levitation magnet and a high-temperature superconductor, and a fan-shaped high-temperature superconductor is arranged on the circumference.
に生じる反発力により物体を浮上させ、高温超電導体を
囲み、高温超電導体と浮上用マグネットの間以外にある
部材を溶接以外の方法で製作し、該高温超電導体と浮上
用マグネットの間にある部材を前記溶接以外の方法で製
作した部材に局部的溶接にて固定して製作した収納容器
を使用したことを特徴とする超電導磁気装置。11. An object is levitated by the repulsive force generated between the levitation magnet and the high-temperature superconductor, the high-temperature superconductor is surrounded, and a member other than between the high-temperature superconductor and the levitation magnet is welded by a method other than welding. A superconducting magnetic device comprising a storage container manufactured by fixing a member between the high-temperature superconductor and the levitation magnet to a member manufactured by a method other than the welding by local welding. .
に生じる反発力により物体を浮上させ、物体の位置を監
視し、物体の位置が規定の範囲を外れると、運転を停止
することを特徴とする超電導磁気装置。12. An object is levitated by a repulsive force generated between a levitation magnet and a high-temperature superconductor, the position of the object is monitored, and when the position of the object deviates from a prescribed range, the operation is stopped. And a superconducting magnetic device.
用マグネットに対向配置された高温超電導体とを０.７t
orr から０.１torr または０.１torr 以下の雰囲気中で
使用することを特徴とする超電導磁気装置。13. A stator connected to an electric power system and a high temperature superconductor arranged facing a levitation magnet are 0.7t.
A superconducting magnetic device which is used in an atmosphere of orr to 0.1 torr or less than 0.1 torr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05264565A JP3095316B2 (en) | 1993-10-22 | 1993-10-22 | Superconducting magnetic device and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05264565A JP3095316B2 (en) | 1993-10-22 | 1993-10-22 | Superconducting magnetic device and operating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07123613A true JPH07123613A (en) | 1995-05-12 |
| JP3095316B2 JP3095316B2 (en) | 2000-10-03 |
Family
ID=17405056
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05264565A Expired - Fee Related JP3095316B2 (en) | 1993-10-22 | 1993-10-22 | Superconducting magnetic device and operating method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19636548A1 (en) * | 1996-03-14 | 1997-10-16 | Gutt Hans Joachim | Electrical machine using high-temperature superconductor |
| US5747426A (en) * | 1995-06-07 | 1998-05-05 | Commonwealth Research Corporation | High performance magnetic bearing systems using high temperature superconductors |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0615558A (en) * | 1992-07-03 | 1994-01-25 | Amitec Corp | Belt sander for metalworking |
-
1993
- 1993-10-22 JP JP05264565A patent/JP3095316B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5747426A (en) * | 1995-06-07 | 1998-05-05 | Commonwealth Research Corporation | High performance magnetic bearing systems using high temperature superconductors |
| DE19636548A1 (en) * | 1996-03-14 | 1997-10-16 | Gutt Hans Joachim | Electrical machine using high-temperature superconductor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3095316B2 (en) | 2000-10-03 |
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